The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Come for the speed, leave in love with the desert.

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Paleoamericans built these ancient walls high in the Colorado Rockies as part of an extensive hunting system.

"All Mountains - All The Time."

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Possibly the world's only drive-in movie theater with an attached motel.

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

A downtown park built on top of unclaimed graves.

This iconic science fiction house still looks like something from the future.